SLUSDQ4 April 2019 BQ79606A-Q1
The BQ79606A-Q1 uses two differential communications links to transmit signals between ICs in a stack. Employing differential links provides superior noise immunity. The base device then translates the differential signals back to a single-ended signal. It is important to maintain the signal integrity of each differential pair to maximize immunity to interfering signals from external sources.
In addition to capacitor based communication, the BQ79606A-Q1 also supports transformer based communications. In general, the recommendations above still apply, except for item 5. For transformer based communication, be sure to select a transformer that provides isolation appropriate for the specific application.